test: add README quickstart search regression test

[Asritha916]

Summary

Add an offline regression test for the README search quickstart.

Changes

• Mock the HTTP response locally.
• Verify the request method, route, and query parameters.
• Verify the decoded pagination and tweet response.
• Make no network requests.

Closes #19

Note

Add regression test for XTwitterScraper.x.tweets.search README quickstart

Adds a pytest test in test_readme_quickstart.py that mocks a GET to /x/tweets/search using respx and verifies that the client sends the correct q and limit query parameters. Also checks that the response is parsed into the expected result fields, including has_next_page and tweet text.

^{Macroscope summarized facd806.}

[kriptoburak]

The offline test passes locally and its assertions match the README flow. Three repository requirements remain:

1. Rebase onto the current Xquik-dev/main branch.
2. Add the repository's standard SPDX copyright and Apache-2.0 header to tests/test_readme_quickstart.py.
3. Add a final newline and certify your commit with your own DCO sign-off.

A safe command sequence after editing is:

git fetch https://github.com/Xquik-dev/x-twitter-scraper-python.git main
git rebase FETCH_HEAD
git add tests/test_readme_quickstart.py
git commit --amend --no-edit --signoff
git push --force-with-lease

The Signed-off-by identity must match your commit author. A maintainer cannot certify your contribution. I will rerun the full hosted and local gates after your update.

[kriptoburak]

The contributor completed the rebase, SPDX, and author-matching DCO requirements. I added only the missing final newline in signed-off commit 4a0ca25. Ruff, Pyright, mypy, the focused offline test, import verification, and REUSE 389/389 pass. @furkanerday please review the current head after hosted checks complete.

All requested changes were completed on the current head.

[furkanerday]

Reviewed the complete diff, description, discussion, repository policies, public contracts, relevant tests, required checks, and commit sign-offs at 4a0ca25. All required checks pass, no unresolved threads remain, and I found no blocking issue.

[Asritha916]

Thanks @kriptoburak and @furkanerday for the reviews and guidance throughout this PR. This was my first open-source contribution, and I learned a lot from the process. I really appreciate your time and support!